BAYOU LA BATRE -- Authorities discovered the body of a young girl -- one of four children police say were thrown last week from the Dauphin Island bridge by their father -- in the marshlands of eastern Mississippi on Tuesday morning.

Authorities said the body was found in the area of North Rigolets and Crooked Bayou.

Mobile County Sheriff Sam Cochran said a Mississippi marine police team found the young girl's body at about 9:30 a.m.

Authorities declined to identify the body, but said the girl is either Lindsey Luong, 1, or Hannah Luong, 2, who were both missing.

Lam Luong, 37, of Irvington, is in jail on four counts of capital murder in connection with the deaths of his four children.

Police have said Luong confessed to the slayings as an act of revenge against his wife, Kieu Ngoc Phan. But his attorney has said he was pressured by police into a false confession.

The bodies of Ryan Phan, 3, and Danny Luong, 4 months, were found in the coastal marsh lands of Mobile County over the weekend.

Authorities said both boys died from blunt force injuries, likely from the fall off the bridge, and drowning.

A search from Bayou La Batre to Jackson County, Miss., will continue in the search for the body of the girl still missing.

The body found Tuesday washed ashore one mile west of where Ryan Phan's body was found Sunday at Bayou La Fourche Bay.